How heavy is that Vortex 1-6x Razor? I have a Vortex 1-4x Viper PST on my SIG 716 and really like it.

The Razor seems like it would be a good fit for my SCAR17S which is currently wearing an ACOG TA031F with a 5.56 recticle. The eye relief on the ACOG is marginal, however I really don't want to drop $2500 on an appropriate 7.62 spec'd ACOG. I tried out my Viper on the SCAR and really liked it, but it sure does add significant weight to the gun. Additionally, 1-6x seems like a better match for the SCAR without over glassing it.